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(No Model.)

H. P. FISKE. METHOD OF FORMING MEEAL BLANKS FOR GAPPING NAILS No.395,888. Patented Jan. 8, 1889.

UNITED STATES PATENT OFFICE.

HENRY I FISKE, OF \VATERBURY, CONNECTICUT, ASSIGNOR TO THE AMERICAN RINGCOMPANY, OF SAME PLACE.

METHOD OF FORMING METAL BLANKS FOR CAPPING NAILS.

SPECIFICATION forming part of Letters Patent No. 395,888, dated January8, 1889.

Application filed June 25, 1888. Serial No. 278,123. (No model.)

T0 (6 1071/0722 it may concern.-

Ile it known that I, HENRY P. FIsKE, of \Vaterbury, in the county of New Haven and State of Connecticut, have invented an Improvement in theMethod of Forming Metal Blanks; and the following is declared to be adescription of the same.

My present improvement is adapted for use with a machine for makingdecorative nails, t'orwhich. I filed an application for patent underdate of September 23, 1887, Serial No. 250,3 3? 2, which application wasduly allowed April 13, 1888.

In the method of forming metal blanks before my present invention it wasusual to out said blanks either from a strip of metal which was widerthan the blank when out orto out said blanks from a sheet of metal, ineither of which cases there was a good deal of surplus metal lormingscrap which it was necessary to remelt and roll for further use.

The peculiarityof my present improvement in the method of forming metalblanks consists, essentially, in cutting the metal blanks from a stripof metal that is narrower than the diameter of the finished blank, andin the carrying out of my improvement I employ a die and matrix forcutting and forming the blank, the recess in the matrix being about asdeep as the thickness of two blanks, the die in entering the matrixcutting the blank, and when the same brin the blank up against the baseof the depression said blank is spread to completely fill the opening inthe matrix, and is made thinner by the spreading operation, and anannular rib is formed on one face of the finished blank.

My improvement relates especially to blank.

"from which are formed decorative nails; but

blanks for any other purpose may be cut in the same manner.

In the drawings, Figure 1 is a front elevation of the strip of metal andthe face of the e matrix. Fig. 2 is a longitudinal section of the die,matrix, and strip of metal just before the cutting-of the blank. Fig. 3represents separately the blank cut. Fig. 4. represents the face ofthc'die, and Fig. 5 a longitudinal i l i section of the die and matrixand strip of metal and the completely-formed blank. Fig. 6 is anelevation of the finished blank.

(1 represents the strip of metal; I), the body portion of the die,and 1) its cutting-face. 0 represents the matrix, and c the depressionin the same. 6 represents the cut blank, and e the finished blank.

By reference to Fig. 1 it will be seen that the width of the strip ofmetal from which the blank is cut is considerably less than the diameterof the depression in the matrix, and also of the face I) of the die. Inthe operation of the parts I prefer, as shown in the drawings, to feedthe strip of metal a vertically to the cutting device, which device, inmaking the cut, as will be seen from Figs. 1 and 2, separates the blank,like the one shown in Fig. 3, from the strip of metal a, forcing thesame into, the depression 0, the small triangular points at 1constituting the waste or scrap. The further movement of the matrix 0against the die I) forces the blank 6 to the bottom of the depression c,the movement of the parts being continued to compress the blank andspread the same in, the depression 0 until it completely fits the sameinto the shape shown in Fig. 6, the finish ed blank being thus madethinner, and also the metal, by compression, harder. 'lhe finished blankmay be pushed out of the depression in the matrix in any desired mannerpreparatory to other blanks being cut and finished.

I have shown in Figs. 2, 4, and 5 the face of the die with an annulardepression which serves to form the annular rib on one face of thefinished blank, this being adapted to receive the nail-head in formin gdecorative nalils.

It isapparent that in my present improvement there will be very littlewaste metal or scrap requiring remeltin g for further use.

I am aware that bars of metal have been cut off to form blanksandcarried into a die and spread laterally by pressure to fill the die;also, that in the manufacture of sheet-metal nail-heads dies have beenused to cut out a full-sized blank, and then to form a circular rib orcup that receives the head of the nail.

In my present inolhml 1111 Two operall'iuns11 1-0 ing the blank 111dforming :11 circular lil) upon IO made use of so as to save nmi'vrinl11ml 'l'm-ili- (1110 surface and si11111'li'a n00uslyspreading the 1:110the 1111111111'1101'111'0. 111011111 laterally in [ill the (lie,suhsimii ially 51.;

The method hvroin spmjviliml (1f .l'mrining Signml 111' 1110 this Elsi](lay of June, 1888. 11101111 blanks, iho smne consisting in millingIIENR Y T. FISKE. :1 pinto of 11101111 by Sllll'ilhlf (lies l'rmn nstrip 111' sheet 01 11101111 which is nal'l-mvvr in width T112111 iliv[inisllwl l1l:111l ,:1n(l iilwn mlnpi'vss- W it nosses:

GEO. '1. PINUKNEY, 111111111: (1. M011.

